<script setup lang='ts'>
const search = document.querySelector('.search');
const input = document.querySelector('.input');
const btn = document.querySelector('.btn');

const active = () => {
    search?.classList.toggle('active')
}

</script>

<template>
    <div class="search">
        <input type="text" class="input" placeholder="Search...">
        <button class="btn" @click="active"></button>
    </div>
</template>

<style scoped>
@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;700&display=swap');

* {
    box-sizing: border-box;
}

body {
    background-image: linear-gradient(to right, white, #7158e2); /*渐变*/
    font-family: 'Roboto', sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    overflow: hidden;
    margin: 0;
}

.search {
    position: relative;
    height: 30px;
}

.search .input {
    /* background-color: #fff; */
    border: 0;
    font-size: 18px;
    padding: 0;
    height: 30px;
    width: 30px;
    transition: width 0.3s ease;
}

.btn {
    background-color: #fff;
    border: 0;
    cursor: pointer;
    font-size: 24px;
    position: absolute;
    top: 0;
    left: 0;
    height: 30px;
    width: 30px;
    transition: transform 0.3s ease;
}

/* .btn:focus {
    outline: none;
} */

.input:focus {
    outline: none;
}


.search.active .input {
    width: 200px;
}

.search.active .btn {
    transform: translateX(200px);
}
</style>